US3018016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum device
Assignee: National Research Corp
•
Filing: 1959-09-24
•
Granted: 1962-01-23
•
Expires: 1979-09-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Milo P Huilicka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:19
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/001; Y; Y10; Y10S; Y10S62/00; Y10S62/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
AN INSULATED VESSEL COMPRISING AN INNER CHAMBER TO BE MAINTAINED AT A PREDETERMINED LOW TEMPERATURE, SAID INNER CHAMBER BEING DEFINED BY A FIRST WALL, A SECOND WALL OUTSIDE OF SAID FIRST WALL AND SPACED THEREFROM, SAID WALLS BEING SEALED TOGETHER TO FORM A SPACE BETWEEN SAID WALLS WHICH IS EVACUATED TO A TOTAL PRESSURE OF LESS THAN 1 MICRON HG ABS. WHEN SAID FIRST WALL IS AT A TEMPERATURE LESS THAN ABOUT 100*K., SAID SPACE CONTAINING AT LEAST 30 LAYERS OF METAL-COATED-NONMETALLIC, FLEXIBLE PLASTIC MATERIAL SURROUNDING THE INNER WALL, SAID PLASTIC MATERIAL
Claim 2
Dependent Claim
92 words
AN INSULATED VESSEL COMPRISING AN INNER CHAMBER TO BE MAINTAINED AT A PREDETERMINED LOW TEMPERATURE, SAID INNER CHAMBER BEING DEFINED BY A FIRST WALL, A SECOND WALL OUTSIDE OF SAID FIRST WALL AND SPACED THEREFROM, SAID WALLS BEING SEALED TOGETHER TO FORM A SPACE BETWEEN SAID WALLS WHICH IS EVACUATED TO A TOTAL PRESSURE OF LESS THAN 1 MICRON HG ABS. WHEN SAID FIRST WALL IS AT A TEMPERATURE LESS THAN ABOUT 100*K., SAID SPACE CONTAINING AT LEAST 30 LAYERS OF METAL-COATED-NONMETALLIC, FLEXIBLE PLASTIC MATERIAL SURROUNDING THE INNER WALL, SAID PLASTIC MATERIAL
References Cited (Backward Citations)
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Cited
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US1970120A
Cited
US2102698A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |